7 Marvelous Discoveries in Science - Page 6 of 9

Photons

Photons are essential particles to light and radiation and they are just about the most marvelous discoveries in science. It is both described as a wave and a particle. However it has no mass, and can travel at the speed of light. The theory of photons was not popular until Albert Einstein looked into it. He explained the photoelectric effect building off from Gilbert Lewis in 1926. Lewis stated that light was made of particles, making this a fundamentally important particle to physics.